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Operation, cont’d
CrossPoint Plus Matrix Switchers • Operation3-18
System reset to factory defaults
To reset the switcher to the factory default settings, press and hold the Esc button
on the front panel while AC power is being applied. Continue to hold the Esc
button until the power up sequence is completed (all LEDs turn off, the Video and
Audio LEDs turn on, the Esc LED blinks, and the Power LED (if equipped) turns
on). System reset clears all ties and presets, the RGB delay, the mutes, and the I/O
grouping to the factory defaults and sets all audio gain levels to unity gain (+0dB).
Rear Panel Controls
The CrossPoint Plus matrix switchers all have sync termination switches on the
rear panel for inputs 1, 3, 5, and 7 on the CrossPoint Plus 168 and 1616 models and
inputs 1 through 4 (figure 3-20) on the CrossPoint Plus 84, 88, 124, and 128 models.
The switches provide a way to condition non-TTL sync levels greater than 5Vp-p,
enabling the sync to be properly passed from input to selected output(s). The
matrix switchers have two sets of sync termination switches; one for horizontal or
combined sync and a second set for vertical sync.
16
15
16
CrossPoint
168 and 1616
CrossPoint
84, 88, 124, and 128
INPUTS
75
12 43
INPUTS
75
12 43
1357
1357
Figure 3-20 — Rear panel sync termination switches
Each switch provides the option of selecting either 510 ohms or 75 ohms. The
75 ohms position is required only for an input with non-TTL sync, greater than
5V p-p. The normal position is 510 ohms.
An input that produces an out of sync display, a display that is rolling
vertically and/or tearing horizontally, could indicate a non-TTL sync input. A
device that is known to output non-TTL sync levels (greater than 5V p-p)
should be connected to one of the inputs with sync termination switches, and
the switches for that input should be set to the 75 ohm position. If you’re not
sure, check the specifications in the user’s manual for the input device.
Troubleshooting
This paragraph gives recommendations on what to do if you have problems
operating the CrossPoint Plus, and it provides examples and descriptions for some
image problems you may encounter.
General checks
1. Ensure that all devices are plugged in and powered on. The switcher is
receiving power if one of the input LEDs is lit.
2. Ensure an active input is selected for output on the switcher.
3. Ensure that the proper signal format is supplied.
4. Check the cabling and make corrections as necessary.
5. Call the Extron S
3
Sales & Technical Support Hotline if necessary.